Compilation
Argyrochosma fendleri

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Name

Identification
Isotype of Argyrochosma fendleri (Kunze) Windham [family PTERIDACEAE ] (stored under name); Verified by Not on sheet, Notholaena fendleri Kunze [family PTERIDACEAE ] Verified by Not on sheet, Isotype of Notholaena fendleri Kunze [family PTERIDACEAE ] Verified by Not on sheet,
Related name
  • Notholaena fendleri
  • Argyrochosma fendleri

Flora

Entry for Argyrochosma fendleri (Kunze) Windham [family ADIANTACEAE]
Herbarium
Flora of North America (FNA)
Collection
Flora of North America
Resource Type
Reference Sources
Entry From
Flora of North America, Vol 2,
Names
Argyrochosma fendleri (Kunze) Windham [family ADIANTACEAE], Amer. Fern J., 77: 40. 1987
Notholaena fendleri Kunze [family ADIANTACEAE], Farrnkräuter, 2: 87, plate 136. 1851
Cheilanthes cancellata Mickel [family ADIANTACEAE]
Pellaea fendleri (Kunze) Prantl [family ADIANTACEAE]
Treatment Author(s)
Michael D. Windham
Information
Stem scales brown. Leaves 5--25 cm. Petiole dark brown, 0.75--1.5 mm diam. Blade deltate, 4--6-pinnate proximally, leathery to somewhat herbaceous, abaxially covered by whitish farina, adaxially glabrous or glandular; rachis rounded adaxially. Pinna costae distinctly flexuous, branches arising from prominent angles. Ultimate segments not articulate, dark color of stalks continuing into segment bases abaxially; segment margins plane to recurved, often partially concealing sporangia; veins usually obscure adaxially. Sporangia submarginal, borne on distal 1/4 of secondary veins, containing 64 spores. 2 n = 54.
Phenology
Sporulating summer--fall
Altitude range
1700--3000 m
Distribution
Mexico in Sonora.USA Colo.USA N.Mex.USA Wyo.
Discussion
Argyrochosma fendleri is occasionally confused with A . limitanea , which can have slightly flexuous rachises and pinna costae. All A . limitanea specimens with slightly flexuous rachises and costae have 32 spores per sporangium, whereas specimens of A . fendleri consistently have 64. This southern Rocky Mountain species is the only member of the genus that is found on acidic substrates such as granite.

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